Your AI tax agent in Spain.
Less paperwork. More time for your business and your life.
Backed by human professionals. We prepare your included tax returns. You review and approve them in the app, then we file them.
Your business, all in view.
Income, expenses and upcoming taxes. Your numbers and your next steps, together in one place.
You became self-employed to do your own thing.Leave the paperwork with Melso.
Finding receipts. Sorting invoices. Getting ready for tax season. Melso organizes the everyday work and human professionals handle your included returns. You get on with your business.
This is how easy Melso can be.
From your first invoice to your quarterly tax returns.
Share your invoices and receipts. Melso reads their details and organizes your expenses. You check what needs review.
Expenses
Melso reads their details and turns them into expenses.
Prepare invoices in Melso and check their details in the app. You approve the exact version before it is issued.
See how your business is doing, check the next tax payment and find what needs your attention. Ask Melso from the same screen.
Our professionals prepare and review your included returns. You approve the exact draft in the app; then they file it with Spain’s tax agency, the AEAT.
Every expense, with its paperwork.
A receipt on your phone. An invoice someone just sent. Share it with Melso and keep your expense details within reach.
Share it your way
On WhatsApp or directly in the app.
See what is missing
Check your documents and expenses awaiting review.
Ask about your business
Talk to Melso alongside your numbers.
Estudio Nube
Oct 3, 2026
F-2026-018
- Subtotal
- €70.00
- VAT (21%)
- €14.70
- Total
- €84.70
- Supplier
- Estudio Nube
- Date
- Oct 3, 2026
- Category
- Professional services
- Total
- €84.70
- Status
- Needs review
AI for the paperwork. People for your taxes.
Technology organizes. People prepare, review and file. You have the final say before anything is filed.
- Melso
- Everyday work, in orderOrganizes invoices and expenses, spots missing information and helps with your questions.
- Human professionals
- Preparation and filingReview and prepare your included returns, then file them with the required authority.
- You
- The final approvalCheck the exact draft and approve it in the app before it is filed.
A shorter to-do list.
- YouShare your invoices and receipts
- Melso and its professionalsOrganize the documents and expenses
- YouProvide any missing information
- Melso and its professionalsPrepare and review your included tax returns
- YouApprove the exact draft in the app
- Melso and its professionalsFile it and deliver the AEAT receipt
One plan. A clear scope.
Pro and Plus include your tax agent, the tools and the professional service, including your annual Renta return (modelo 100). We confirm coverage for your tax profile before you subscribe.
Cancel anytime.
Frequently asked questions.
No. Write to Melso in English on WhatsApp and it answers in English, and the app works in English too. The returns themselves are Spanish forms, and you can ask about any box before you approve.
Melso and its professionals prepare and review the included returns for your activity and tax profile. You review and approve the draft in the app. With the required authority, the professional files it with the AEAT. The actual receipt confirms filing; approval alone does not.
Yes. Melso collects what your registration needs and a Melso gestor files it with Hacienda and the Seguridad Social, then writes to you with the next steps.
It includes keeping your invoices and expenses in order, professional preparation and filing of the included returns for your profile, your annual income tax return (Renta, form 100), issuing invoices once you approve them and chatting on WhatsApp, with AI usage up to a monthly limit. Payroll and letters from Hacienda aren't part of the fee unless we confirm it in writing.
Day to day happens on WhatsApp: you send receipts and invoices, ask questions and get reminders. The app is where you review and approve. A “yes” in the chat doesn't approve a return or issue an invoice.
We review your situation and help you gather the documents. We agree which quarter you start with Melso and who handles each part during the switch.
We confirm the service scope for your activity and tax profile before you subscribe. Obligations outside that scope need a separate agreement; a reminder does not mean preparation or filing is included.
Your tax obligations depend on your activity and tax profile. We confirm which returns the service covers before you subscribe.
- Autónomo
- Spain's word for self-employed: freelancers, contractors and sole traders who invoice in their own name.
- Hacienda (AEAT)
- Spain's tax agency. Melso's professionals file your included returns with the required authority after your approval.
- NIE
- Your foreigner identity number. As an autónomo it's your tax ID, and it goes on every invoice you send.
- Seguridad Social and the cuota
- Spain's social security. Autónomos pay a monthly contribution, the cuota, that depends on what they earn.
- Modelo 303
- A Spanish VAT return. Whether you must file it and which expenses qualify depends on your tax situation.
- Modelo 130
- An income tax prepayment return for some self-employed people. Your activity and withholding arrangements determine whether it applies.
Filing and direct-debit deadlines vary by return and period. Check the AEAT calendar for the applicable year. AEAT calendar.
Less paperwork. More time for you.
Get started with Melso or tell us about your situation on WhatsApp.